ChemicalSuppliers

Potassium Metabisulfite suppliers and prices

Formula
K2O5S2
CAS number
16731-55-8
Molar mass
222.33 g/mol

Cheapest by weight

$12.65 per kilogram

Price per unit, converted to US dollars

At iBrew, Australia

Pack
1 kilogram for 18.00 AUD
Grade
Grade not stated · packs of 1 to 25 kilograms
View at iBrew

7 offers from 3 stores · Prices checked October 28, 2026 · Prices run from $12.65 to $493 per kilogram, because a bigger pack costs less per kilogram.

Show prices per

Every price we found

7 prices, cheapest first

StoreGrade and packPriceLink
iBrewAustraliaLowest price Grade not stated · packs of 1 to 25 kilograms1 kilogram for 18.00 AUD $12.65 per kilogram View at store
Lab AlleyUnited States Food grade · packs of 1 to 25 kilograms1 kilogram for $56.49 $56.49 per kilogram View at store
Lab DepotUnited States Food grade · packs of 1 to 25 kilograms12 kilograms for $1,208.05 $101 per kilogram View at store
Lab AlleyUnited States Food grade · packs of 50 grams to 1 kilogram500 grams for $50.47 $101 per kilogram View at store
Lab DepotUnited States Reagent grade · packs of 1 to 25 kilograms12 kilograms for $2,164.15 $180 per kilogram View at store
Lab AlleyUnited States Laboratory grade · packs of 50 grams to 1 kilogram500 grams for $98.53 $197 per kilogram View at store
Lab DepotUnited States Reagent grade · packs of 50 grams to 1 kilogram500 grams for $246.67 $493 per kilogram View at store

Making a solution?

Pick the strength and how much you need. We work out the grams of Potassium Metabisulfite and what they cost at the cheapest store we track.

You need
222 grams
of Potassium Metabisulfite, molar mass 222.33 g/mol
That much costs
$2.81
$2.81 per litre of solution, at the lowest price per gram we found
Cheapest way to buy it
$12.65
1 pack of 1 kilogram at iBrew
View at iBrew

Weigh it out, dissolve it in less water than you need, then top up to the full amount.

Bulk suppliers in the US

3 companies make or distribute it, as reported to the US Environmental Protection Agency in 2020 and 2024.

Your company? List it free and get bulk buyer requests.

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Chemical identity

Formula
K2O5S2
Molar mass
222.33 g/mol
CAS number
16731-55-8
InChIKey
RWPGFSMJFRPDDP-UHFFFAOYSA-L
Official record
PubChem 28019

How we compare: each store's own price, turned into US dollars at European Central Bank rates of 2026-10-29, then divided by the pack size. Shipping and tax are not included.